with the current ceo steve balmer and other executives. microsoft is using its pc-based expertise to help it succeed in the computer market. but the challenges it faces are considerable. the focus in the coming months will be on increasingly fierce competition with its main rival, apple. rosa sobrino, nhk world, new york. >>> that is all for business at this hour. i'll leave you with a check on regional markets. >>> diplomats from the world's leading powers say they're ready to start talking again about iran's nuclear program. catherine ashton met in brussels with members of the u.n. security council and germany. negotiators suspended the so-called six-party talks on iran's nuclear program in june. ashton and her counterparts issued a statement after their meeting. they confirmed they would start negotiations with the eiranians as soon as possible. they're demanding iranian leaders halt their nuclear program. scientists have enriched uranium to 20% purity. beyond that level they can quickly develop uranium to weapons grade. iranians want other negotiators to lift all sanctions. >>> the u.